diff --git a/src/mol-plugin/skin/base/components/transformer.scss b/src/mol-plugin/skin/base/components/transformer.scss
index aca44d435bbafbec2138e5da13b8974509273875..e753f85240b746cfe81de14769e81ee51f3cc82a 100644
--- a/src/mol-plugin/skin/base/components/transformer.scss
+++ b/src/mol-plugin/skin/base/components/transformer.scss
@@ -44,11 +44,12 @@
 
 .msp-transform-header {
     position: relative;
-    border-top: 1px solid $entity-color-Behaviour; // TODO: separate color
+    // border-top: 1px solid $entity-color-Behaviour; // TODO: separate color
 
     > button {
         text-align: left;
-        background: color-lower-contrast($default-background, 4%);
+        padding-left: $row-height;
+        background: $control-background; // color-lower-contrast($default-background, 4%);
         font-weight: bold;
     }
 
diff --git a/src/mol-plugin/state/transforms/model.ts b/src/mol-plugin/state/transforms/model.ts
index 4f67fc62cd221ab95984d506987628e2509057b3..d38308ddb4eb26cd94fe3cb73c539122e856e314 100644
--- a/src/mol-plugin/state/transforms/model.ts
+++ b/src/mol-plugin/state/transforms/model.ts
@@ -168,7 +168,6 @@ const StructureAssemblyFromModel = PluginStateTransform.BuiltIn({
                 return new SO.Molecule.Structure(base, label);
             }
 
-            asm = model.symmetry.assemblies[0];
             id = asm.id;
             const s = await StructureSymmetry.buildAssembly(base, id!).runInContext(ctx);
             const props = { label: `Assembly ${id}`, description: structureDesc(s) };
diff --git a/src/mol-plugin/ui/state/common.tsx b/src/mol-plugin/ui/state/common.tsx
index a1d39c7e8a653b1cff15ab11e2a91d774ac84551..d6cc4c8f8499ee94e0a027ebb18d9e8f9e782c42 100644
--- a/src/mol-plugin/ui/state/common.tsx
+++ b/src/mol-plugin/ui/state/common.tsx
@@ -177,7 +177,7 @@ abstract class TransformContolBase<P, S extends TransformContolBase.ControlState
 
         return <div className='msp-transform-wrapper'>
             <div className='msp-transform-header'>
-                <button className='msp-btn msp-btn-block' onClick={this.toggleExpanded}>{display.name}</button>
+                <button className='msp-btn msp-btn-block' onClick={this.toggleExpanded} title={display.description}>{display.name}</button>
                 {!isEmpty && !this.state.isCollapsed && <button className='msp-btn msp-btn-link msp-transform-default-params' onClick={this.setDefault} disabled={this.state.busy} style={{ float: 'right'}} title='Set default params'>↻</button>}
             </div>
             {!isEmpty && !this.state.isCollapsed && <>
diff --git a/src/mol-plugin/ui/state/tree.tsx b/src/mol-plugin/ui/state/tree.tsx
index 3859cb0a80d470e283d5de6b15e95d614a69ce65..6b42be65ba94871cb98c3a4308c9026fb56819a1 100644
--- a/src/mol-plugin/ui/state/tree.tsx
+++ b/src/mol-plugin/ui/state/tree.tsx
@@ -222,7 +222,7 @@ class StateTreeNodeLabel extends PluginUIComponent<{ nodeRef: string, state: Sta
 
         const row = <div className={`msp-tree-row${isCurrent ? ' msp-tree-row-current' : ''}`} onMouseEnter={this.highlight} onMouseLeave={this.clearHighlight}
             style={{ marginLeft: this.state.isCurrent ? '0px' : `${this.props.depth * 10}px`, borderRadius: this.state.isCurrent ? '0' : void 0 }}>
-            {isCurrent ? <b>{label}</b> : label}
+            {label}
             {children.size > 0 &&  <button onClick={this.toggleExpanded} className='msp-btn msp-btn-link msp-tree-toggle-exp-button'>
                 <span className={`msp-icon msp-icon-${cellState.isCollapsed ? 'expand' : 'collapse'}`} />
             </button>}